Clarify header ideas a bit. Still not great. w3c/ServiceWorker#348

Overview.html

@@ -7,7 +7,7 @@
 
 <p><a class="logo" href="//www.whatwg.org/"><img alt="WHATWG" height="100" src="//resources.whatwg.org/logo-fetch.svg" width="100"></a>
 <h1 id="cors">Fetch</h1>
-<h2 class="no-num no-toc" id="living-standard-—-last-updated-31-july-2014">Living Standard — Last Updated 31 July 2014</h2>
+<h2 class="no-num no-toc" id="living-standard-—-last-updated-1-august-2014">Living Standard — Last Updated 1 August 2014</h2>
 
 <dl>
  <dt>This Version:
@@ -33,7 +33,7 @@ <h2 class="no-num no-toc" id="living-standard-—-last-updated-31-july-2014">Liv
 <p class="copyright"><a href="http://creativecommons.org/publicdomain/zero/1.0/" rel="license"><img alt="CC0" src="http://i.creativecommons.org/p/zero/1.0/80x15.png"></a>
 To the extent possible under law, the editor has waived all copyright and
 related or neighboring rights to this work. In addition, as of
-31 July 2014, the editor has made this specification available
+1 August 2014, the editor has made this specification available
 under the
 <a href="http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owfa-1-0" rel="license">Open Web Foundation Agreement Version 1.0</a>,
 which is available at
@@ -1598,8 +1598,6 @@ <h3 id="http-network-or-cache-fetch"><span class="secno">4.3 </span>HTTP network
  <!-- XXX ideally we have an easier way to convert something ASCII-safe into bytes
           concept-as-bytes -->
 
- <li><p class="XXX">Append `<code title="">Host</code>`, ...
-
  <li><p>If <var title="">HTTPRequest</var>'s
  <a href="#force-origin-header-flag">force <code>Origin</code> header flag</a> is set,
  <a href="#concept-header-list-append" title="concept-header-list-append">append</a>
@@ -1662,6 +1660,26 @@ <h3 id="http-network-or-cache-fetch"><span class="secno">4.3 </span>HTTP network
   <var title="">HTTPRequest</var>'s
   <a href="#concept-request-credentials-mode" title="concept-request-credentials-mode">credentials mode</a>.
 
+ <li>
+  <p>Modify <var title="">HTTPRequest</var>'s
+  <a href="#concept-request-header-list" title="concept-request-header-list">header list</a> per HTTP.
+
+  <p class="note no-backref">It would be great if we could make this more normative
+  somehow. At this point <a href="#concept-header" title="concept-header">headers</a> such as
+  `<code title="http-accept-encoding">Accept-Encoding</code>`,
+  `<code title="http-connection">Connection</code>`,
+  `<code title="http-dnt">DNT</code>`, and
+  `<code title="http-host">Host</code>`,
+  are to be <a href="#concept-header-list-append" title="concept-header-list-append">appended</a> if necessary.
+
+  <p>`<code title="http-accept-charset">Accept-Charset</code>` must not be included.
+  `<code title="http-accept">Accept</code>` and
+  `<code title="http-accept-language">Accept-Language</code>` must not be included at this
+  point. <span class="note">See <a href="#http-header-layer-division">HTTP header layer division</a>.</span>
+
+ <li>
+  <p class="XXX"><a href="https://github.com/slightlyoff/ServiceWorker/issues/398">Handle caches</a>.
+
  <li>
   <p>Let <var title="">response</var> be the result of making an HTTP request, using
   <var title="">HTTPRequest</var>, following the requirements from HTTP as appropriate, and
@@ -3042,7 +3060,7 @@ <h2 class="no-num" id="background-reading">Background reading</h2>
 
 <p><em>This section and its subsections are informative only.</em>
 
-<h3 class="no-num" id="http-header-layer-division">HTTP header layer division</h3>
+<h3 class="no-num" id="http-header-layer-division"><dfn>HTTP header layer division</dfn></h3>
 
 <p>For the purposes of fetching, the platform has an API layer (HTML's
 <code title="">img</code>, CSS' <code title="">background-image</code>), service worker layer,

Overview.src.html

@@ -1554,8 +1554,6 @@ <h3>HTTP network or cache fetch</h3>
  <!-- XXX ideally we have an easier way to convert something ASCII-safe into bytes
           concept-as-bytes -->
 
- <li><p class=XXX>Append `<code title>Host</code>`, ...
-
  <li><p>If <var title>HTTPRequest</var>'s
  <span>force <code>Origin</code> header flag</span> is set,
  <span title=concept-header-list-append>append</span>
@@ -1618,6 +1616,26 @@ <h3>HTTP network or cache fetch</h3>
   <var title>HTTPRequest</var>'s
   <span title=concept-request-credentials-mode>credentials mode</span>.
 
+ <li>
+  <p>Modify <var title>HTTPRequest</var>'s
+  <span title=concept-request-header-list>header list</span> per HTTP.
+
+  <p class="note no-backref">It would be great if we could make this more normative
+  somehow. At this point <span title=concept-header>headers</span> such as
+  `<code title=http-accept-encoding>Accept-Encoding</code>`,
+  `<code title=http-connection>Connection</code>`,
+  `<code title=http-dnt>DNT</code>`, and
+  `<code title=http-host>Host</code>`,
+  are to be <span title=concept-header-list-append>appended</span> if necessary.
+
+  <p>`<code title=http-accept-charset>Accept-Charset</code>` must not be included.
+  `<code title=http-accept>Accept</code>` and
+  `<code title=http-accept-language>Accept-Language</code>` must not be included at this
+  point. <span class=note>See <span>HTTP header layer division</span>.</span>
+
+ <li>
+  <p class=XXX><a href=https://github.com/slightlyoff/ServiceWorker/issues/398>Handle caches</a>.
+
  <li>
   <p>Let <var title>response</var> be the result of making an HTTP request, using
   <var title>HTTPRequest</var>, following the requirements from HTTP as appropriate, and
@@ -2998,7 +3016,7 @@ <h2 class=no-num>Background reading</h2>
 
 <p><em>This section and its subsections are informative only.</em>
 
-<h3 class=no-num>HTTP header layer division</h3>
+<h3 class=no-num><dfn>HTTP header layer division</dfn></h3>
 
 <p>For the purposes of fetching, the platform has an API layer (HTML's
 <code title>img</code>, CSS' <code title>background-image</code>), service worker layer,